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Electrical connections
7.1 Precautions for electrical connections
Follow the precautions below before making electrical connections:
• Secure electric cables with cable ties so that they do not come into contact with the pipes (especially
avoid contact with the refrigeration circuit pipes on the high pressure side).
• Ensure that no external force is exerted on the terminal connectors.
• When installing the earth leakage circuit breaker, make sure it is compatible with the inverter (resistant to
high frequency electromagnetic interference) to avoid unnecessary tripping of the switch.
• If a 3-way valve is required in the system, it is advisable to use the kit supplied as an option. However, it
is preferable to choose a ball type to ensure complete separation between the domestic hot water circuit
and the system circuit. In any case, low-leakage valves should be used. When using a 2- or 3-way valve in
the circuit, it is advisable for its maximum switching time to be less than 60 seconds. 30 s switching time
is recommended;
O
WARNING
The dierential circuit breaker must be a 30 mA (<0.1 s) fast tripping type.
This unit is equipped with an inverter.
The installation of a power-factor condenser not only disturbs the improving eect that such a device has on
the power factor, but can also cause the condenser to overheat due to high-frequency waves.
It is therefore recommended not to install a power-factor condenser in order to avoid possible accidents.
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